Kronos Studio vs Rondo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kronos Studio
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Real strength workouts, written for the gear you've got and the 30 minutes you have. Open Kronos and today's session is ready: exercises, sets and the weights filled in, built for the equipment in front of you and the minutes you named. Different every time, shaped to your gear, your time, and how you actually feel today. You don't need more motivation. You need fewer decisions. IT ALREADY KNOWS • It already knows what's at your gym. • It already knows you only have 20 minutes. • It already knows you skipped Tuesday. • It already knows you hated lunges last time. • It already knows you've done legs twice this week. So you don't have to. HOW ONE TAP WORKS BUILT AROUND YOUR ACTUAL GEAR. A pair of dumbbells, a full gym, or nothing at all: tell Kronos what you have and it never writes a workout that needs a cable machine someone else is on. It fills in the weight, too, instead of leaving you a blank. HOTEL ROOM? HOTEL WORKOUT. Save your spots: gym, home, hotel, the park. Switch in one tap and the workout reshapes itself. Flag an injury once and it plans around that too. SWIPE EXERCISES, NOT EX'S. Love it, like it, meh, never again. Every swipe trains the next workout. PROGRAMS THAT BEND. Seventeen programs, 2 to 8 weeks each, written for your gear and shaped to your week instead of the other way round. The first session of every one is free. Any day you'd rather not be on one, build a single session instead. TRAIN WITH YOUR CREW Start a challenge, drop the code in the group chat, and every finished day puts your name on the Wall beside theirs. Pick a shape: a daily target, a ladder, a weekly max test, or just show up. Wildcards cover a missed day, streaks carry, and nobody gets a notification about your rest day. It's the part that makes people keep going, and it isn't a leaderboard for strangers. It's five people you already know. A BIG CALM TIMER We tell you what's next; you just lift. No tapping mid-set. Then swipe: right to keep, left for never again. Benchmarks are in there too. Cindy, Murph, and 42 more, each one scaled to the kit you actually own instead of the kit the workout assumed. LOGGING, WHEN YOU WANT IT Log a set if you want the number. Skip it if you don't. Your week, your lifts, and your history are there when you go looking, and never the price of getting a workout. PLUS A FREE INTERVAL TIMER. ACTUALLY FREE. HIIT, Tabata, EMOM, AMRAP, plus full custom intervals. Save unlimited presets. The screen stays awake, the cues mix over your music, and there are no ads. No account needed, no "Pro timer" upsell. Not now, not ever. WHAT WE BELIEVE Variety beats optimization. Constraints are features. Decisions are willpower taxes. Today's mood matters. Adherence beats intensity. Fun is a strategy. A B+ workout four days a week beats an A+ workout once. Every time. KRONOS PRO Free is the interval timer, forever, plus five workouts written for your gear and the first session of every program. Pro is the rest: a new workout every day you open the app, every session of all 17 programs, your whole history scored, up to 10 challenges at once, and crew insights. Prices are shown in the app and may vary by region. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms: https://getkronos.app/terms Privacy: https://getkronos.app/privacy Most fitness apps make you a workout plan. Kronos makes you a person who works out. The best workout is the one you'll actually do.
Rondo
This app provides a hands-free, spoken interval timer for workouts, ensuring accuracy and clear cues for each phase. It offers customizable timers for various training formats and keeps your screen awake during sessions. Your workout history is saved locally, with an option for premium features like unlimited timer saves and advanced stats.
- Hands-free spoken cues for work and rest
- Large, readable countdown display
- Haptic feedback for phase changes
- Accurate wall-clock timing
- Music integration with volume softening
- Support for Tabata, EMOM, and custom timers
- Workout history tracking
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Rondo — the interval workout timer that runs your workout so you don't have to You already know your workout. Rondo just makes sure it runs perfectly — hands-free, out loud, and dead accurate. Build your timer once, hit start, and put the phone down. Rondo calls every round for you. THE RUNNING TIMER IS THE WHOLE POINT - A countdown big enough to read from across the gym, mid-burpee. - Spoken cues call out work, rest, and the final round — backed by a beep on every change, so you never have to look. - A haptic buzz on every phase change, so you feel the switch even with music blasting. - Color-blind-safe by design: work and rest flip the whole screen light-to-dark, not just red-to-green. - Keeps your screen awake — and can push brightness to full — while you train. TIMING THAT DOESN'T DRIFT Rondo tracks real wall-clock time, not ticks. Lock your phone, take a call, drop it in your pocket for two minutes — come back and the timer is exactly where it should be, to the second. Most timers quietly fall behind when the screen sleeps. Rondo doesn't. Ever. PLAYS NICE WITH YOUR MUSIC Cues soften your playlist for a beat, then let it come right back. Rondo never pauses your music or hijacks playback — it talks over your track, it doesn't replace it. BUILT FOR THE FORMATS YOU ACTUALLY TRAIN Tabata, EMOM, and a blank builder — free, out of the box. Rounds, sets, lead-in, rest, set-rest, and cooldown, each set with simple steppers. Name your intervals and see the exact breakdown before you start — so a "4-minute Tabata" really is 4 minutes, honestly labelled. WATCH YOUR TRAINING ADD UP Every finished workout lands in your history with a stat strip, a streak, and a month calendar — proof of the work, one session at a time. Free keeps your last seven days; Premium opens all of it, with all-time stats and CSV export. Either way, it stays on your device. PRIVATE BY DEFAULT No account. No sign-up. No ads. No analytics profile. Your timers and your history live on your phone and go nowhere. (Purchases are handled through the App Store) FREE, AND ACTUALLY GENEROUS Unlimited runs — never capped. The whole builder, every interval type, beeps, spoken cues, vibration, keep-awake, and your last 5 timers kept automatically, nothing to remember to save. Light, dark, and system themes included. RONDO PREMIUM — WHEN YOU WANT MORE - Save your timers — as many as you like, named and kept for good. - Custom colors for every interval. - Your whole training history, all-time stats, and CSV export. - Every workout format — AMRAP, For Time, Round for Time, Fight Gone Bad, and multi-block templates. - The full theme gallery and every accent color. Try Premium free for 3 days. Then it's one plan, $1.99 a year — cancel anytime in Settings. Yes, that price is real: a full year for less than a soda, no catch, and no pricier plan hiding behind it. WHY "RONDO"? In music, a rondo is the form where the main theme keeps returning between contrasting episodes. Work, rest, work again — the theme always comes back. Sound familiar? Your workout has been a rondo all along. Now it has a timer that keeps time like one. Terms of Use: https://deecode.io/rondo/terms Privacy Policy: https://deecode.io/rondo/privacy EULA: https://deecode.io/rondo/eula Made by DeeCode LLC.
Screenshots
Verdict
The clearest difference is update cadence: Kronos Studio at every 2 days against Rondo's every 2 weeks. Kronos Studio also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Kronos Studio sells 2 in-app purchases, starting at $8.99 per month and Rondo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Kronos Studio ships an update every 2 days, Rondo every 2 weeks. The most recent releases landed on October 31, 2026 and October 9, 2026 respectively.
| Parameter | Kronos Studio | Rondo |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 2 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 16.4 | 16.4 |
| Further details — not scored | ||
| Size | 102 MB | 12 MB |
| Age rating | 12+ | 12+ |
| Developer | Muller Labs LLC | DeeCode LLC |
In-app purchases
Kronos Studio
- Kronos Pro Monthly$8.991 Month
- Kronos Pro Yearly14 Days trial$49.991 Year
Rondo
- Rondo Premium Lifetime$4.99









